Last 3 weeks MTGOX had $1.4M (bitcoincharts.com)  weekly turnover during rising prices.. it means you can not buy, sell, then buy again - because you will lose money doing it...

It means most of this turnover was one way - Cash => BTC.

There is small chance that this whole ~$4M was requested to be withdrawn immediately. So a LOT of this money stays on the account of MTGOX.

But every other thread about MTGOX is - liquidity problems - people wait for transfers... so things does not add up... ~$4M on balance and no withdrawals.

Some of them forced to buy BTC back on MTGOX and transfer it to another exchange, spurring BTC rate higher but not for a long time... finally they will need to sell it again.